Cable-pothead.



G. F. MAINER.

CABLE POTHEAD.

APP}.|CAT|0N FILED MAR. 20. 1916.

1,229,995. Patented June 12,1917.

Amoxsmrs UNITED STATES PATENT OFFICE.

GEORGE F. MAINER, OF SAN FRANCISCO, CALIFORNIA.

Application filed March 20, 1916.

To aZZ whom it may concern:

Be it known that LGnouon F. ll/lAINER, a citizen of the United States, residing at the city and county of San Francisco and State of California, have invented a new and useful Improvement in Cable Potheads, of which the following is a specification.

This invention relates to a cable pot-head or terminal. joint and union for cables.

it is an object of the present invention to as hereinafter more fully described and claimed, having reference to the accompany ing drawings, in which Figure 1 is a longitudinal section through pot-head.

Fig. 2 is a cro section of same.

liteferring to e draw gs in d ril, f1 represents a lead-covered cable and 2 a "1k metal r sleeve or collar surroundi me. T Tris collar is provided with an an. lar V-shaped groove 3, at one end. a thread ed section l and an annular shoulder The metal collar is adapted to snugly lit he cable and be secured thereto by filling annular groove 3 with solder.

6 represents a tube threaded at one end and adapted to be screwed onto the collar.

The tube 6 is of suflioient length to entirely inclose the cable end, and particularly the splices formed between the distributing wires and the cable. The tube is preferably lined with a paper sleeve 8 and the space between the paper lining 8 and the main cable, with attached or connected. distributing wires 7, is filled with. an insulating com; pound, indicated at 9. l

The device as a whole is particularly adapted for use in connection with cable boxes on poles or in buildings, and isprovided for the purpose of protecting the cable end and particularly the splicing connections formed between the distributing wires and the cable against the entrance of moisture.

Specification of Letters Patent.

Patented June 12.. 191%.

Serial in. 85,344.

In practice, the end of the cable that is to be protected is first uncovered by cutting off a section of the lead sheathing covering the cable. This exposes the several layers or strands of wires carried by the cable. (The metal sleeve 2 is then slipped over the cable end and soldered to the lead sheetin indicated at 3. The metal tube 6 is then slipped over the ends of the several distril'iuting wires 7, which are now spliced to the individual strands of the cable. The tube 6 is then pulled back and screwed onto the metal sleeve and the insulating compound then finally poured into the tube to fill the space between the paper lining S and the individual wires 7 and the cable end. The individual wires are thus not only insulated from each other but become so embedded in the insulating compound that no moisture can possibly enter and form a short circuit between the wires.

The chief invention lies in the use of the collar 2 with a soldering oint 3. This bonstruction positively eliminates the necessity of a wipe joint and is so simple that it may be ap plied by any lineman without resorting to the necessity, asheretofore has b i the practice, of ein 'iloying skilled labor this purpose only.

The pot-diced as a whole is cheaply manufactured, positiv prevents the edit; i of moisture to the cable end or distributing wires 7 and can, furthermore, be more quickly and easily applied .than other devices new in common use.

The paper lining 8 serves to separate the insulating compound from sleeve 6, so to permit salvage of the sleeve. By cutting off the cable below the pot head and heating collar 2 so as to melt the solder, the entire contents of the sleeve may be readily removed. VVithout the paper lining the insulating compound would adhere to the sleeve interior.

The materials and finish of the several parts of the device are such as the xperience and udgment of the manufacturer may dictate.

1 wish it understood that various changes Having thus described my invention, what 15 of contact with the sleeve.

Q :LgvtnK I claim and desire to secure by Letters Petent is 1. In combination With ametal covered cable, a relatively thick collar havin a bore to receive the cable so that the co ier will be held against lateral movem by the length of the Walls formed by i b0 said collar being formed with at conmersunk groove which extends into the body of the collar, a sleeve threaded over the collar, a paper lining in the sleeve, solder in the groove engaging the cable and insulating; compound in the sleeve andengaged with the lining so as to be held by the latter out my hand in the presence of two subscribing 25 witnesses.

GEORGE F. MAINER. Witnesses JOHN H. HERRING,

W W. HEALEY. 

